33 



from dead leaves at the bottom of the pond to make its own 

 case. Two beech leaves which had circular pieces cut from 

 them (after the manner of the leaf-cutting bee) were exhibited. 

 A large number of cases probably made by Liimiophiliis 

 flavicornis were composed of fresh-water shells ; Sphariuin, 

 Planorbis, Limncea, and Bythinia being most frequently used. 

 One larva had used an operculum of Paludina, and another 

 had attached a dead land-shell which had dropped into the 

 water. It should be mentioned that the Sphcsrium and 

 Planovbh shells were all living when the cases were found. 



Mr. Cant exhibited a specimen of cork composition, suit- 

 able for lining insect drawers. It was not cork carpet, which 

 had been found to become too hard in time. The cost of 

 the composition was about the same as that of cork, but it 

 was much more uniform in texture. 



Mr. Enock exhibited living nymphs of several species of 

 dragon-flies, including /I ;ja,v' iinpcrator, JEschna cyanea, Brachy- 

 tron pratense, Calopteryx splendens, and Erythromma naias. 

 They were obtained from the Black Pond, Esher, and from 

 Byfleet. 



Mr. Lucas exhibited specimens of Ancylus lacustris, a so- 

 called fresh-water limpet, from the canal near Byfleet station. 

 These were taken from a branch lying in the water. Ancylus 

 is closely related to LimiKxa, but the spire, which is very small 

 in some Limnaeas, is absent from Ancylus. 



Mr. T. N. Clark exhibited photographs of the ova of 

 Tceniocampa stabilis and of Ennomos Uliaria. 



Mr. Turner exhibited dragon-fly nymphs, one being that 

 oi Anax imperator, from the ponds at Keston. 



Dr. Chapman exhibited living specimens oi Thais polyxena 

 bred from larvae taken in the south of France. 



The President exhibited several cultures which he had 

 made from the dead pupae of Acherontia atropos, exhibited 

 recently by Mr. Adkin. Separate species of bacteria were 

 obtained from each pupa examined, and this suggested to 

 him that the presence of these organisms was no cause of 

 the death of the pupa. Dr. Chapman said that of his twelve 

 pupae of this species none had produced imagines, and all 

 but one had died. Mr. Hall said that he only obtained 

 one pupa last year, and this was still lively. 



Mr. Bateson gave an address on " The Recent Advances 

 in the Study of Heredity," and exhibited numerous speci- 

 menSj chiefly botanical, in illustration of his remarks. 



